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Although I mostly use this blog to post TwinCAT-related stuff, I sometimes make exceptions. This blog post is such an exception.

I was recently on vacation in the Stockholm archipelago on the island Utö. Together with my wife I stayed there during the nights of the Perseid meteor shower. The Perseids are a meteor shower associated with the comet Swift-Tuttle. The peak of the Perseids happened during the night between 12th and 13th of August. Utö is an ideal location for this as it’s quite remote and far from bigger cities and thus has a very dark sky. This year there was no moon that interrupted either so conditions were fantastic. We spent several nights under the stars and saw many Perseids. I brought my DSLR camera and a small tripod with me, so during these nights I made sure to take lots of photos to create a time lapse, which you can see below. Note that the moving light streaks in the movie are not Perseids. These are airplanes and satellites. The Perseids are only visible during one frame at a time in the time lapse so they just flicker by. In the movie you can see one Perseid which I’ve explicitly prepared so that you can see it in slow motion.

Being out for a couple of nights with perfect conditions made me realize how much I’ve missed the stars 💔.

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I’m currently doing a YouTube tutorial called “PLC programming using TwinCAT 3“, which is one of the biggest hobby projects I’ve ever committed myself to. When I started with the tutorial I had a gut-feeling that it would probably take a huge amount of time to pull this one off. Initially, I guessed I would have to spend around five minutes of work for every minute of produced movie (ratio of 5:1). Now that I’ve done a couple of videos and actually clocked the time it takes all I can say is that ….boy, was I completely off with that guess! Lately I have been receiving many e-mails and messages with the question “When is the next part of the tutorial coming out?”. Instead of just providing the boring and generic answer “When it’s finished” I have decided that I will instead try to explain what it takes to do a YouTube video, and why I am not releasing a video every week.

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I have reached 1000 subscribers on YouTube! I never thought I’d get anywhere close to this huge amount of subscribers, especially not this fast! Since I published the first episodes of the “PLC programming using TwinCAT 3 tutorial” in the beginning of March on YouTube, the channel has received over 30.000 views. It seems free PLC programming tutorials are appreciated. It’s time to celebrate and answer some questions that I’ve got from you viewers!

 

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Sharing knowledge with other TwinCAT developers using a blog is not only an easy and good way, but it’s also quite fun. After a long day at work, I often find it enjoying to sit down and write a little bit on a new blog post. Quite recently I launched TcUnit – the TwinCAT unit testing framework and even though there now is tons of documentation and example code on the official website, some people prefer to learn by watching a video. For this reason I’ve created a series of four videos that will introduce TwinCAT software developers to test driven development (TDD) and how to do TDD using TcUnit.

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